diff --git a/quickterm.cabal b/quickterm.cabal
--- a/quickterm.cabal
+++ b/quickterm.cabal
@@ -1,5 +1,5 @@
 name: quickterm
-version: 0.2.1.0
+version: 0.2.3.0
 cabal-version: >=1.10
 build-type: Simple
 license: GPL-3
@@ -36,7 +36,7 @@
       regex-base,
       regex-tdfa,
       uu-parsinglib,
-      base >=4.8 && <4.9
+      base >=4.8 && <5
   default-language: Haskell2010
   hs-source-dirs: src/lib